Hexadecimal, Decimal, Binary & Octal Conversion Table

Search the byte range from hexadecimal 00–FF and compare decimal, binary, octal, and printable ASCII equivalents.

Find a hex or decimal value

Try FF, 0x1A, 26, or 7Fh.

Hex 00–FF Reference Table

Decimal	Hexadecimal	Binary	Octal	ASCII
0	00	00000000	000	—
1	01	00000001	001	—
2	02	00000010	002	—
3	03	00000011	003	—
4	04	00000100	004	—
5	05	00000101	005	—
6	06	00000110	006	—
7	07	00000111	007	—
8	08	00001000	010	—
9	09	00001001	011	—
10	0A	00001010	012	—
11	0B	00001011	013	—
12	0C	00001100	014	—
13	0D	00001101	015	—
14	0E	00001110	016	—
15	0F	00001111	017	—
16	10	00010000	020	—
17	11	00010001	021	—
18	12	00010010	022	—
19	13	00010011	023	—
20	14	00010100	024	—
21	15	00010101	025	—
22	16	00010110	026	—
23	17	00010111	027	—
24	18	00011000	030	—
25	19	00011001	031	—
26	1A	00011010	032	—
27	1B	00011011	033	—
28	1C	00011100	034	—
29	1D	00011101	035	—
30	1E	00011110	036	—
31	1F	00011111	037	—
32	20	00100000	040
33	21	00100001	041	!
34	22	00100010	042	"
35	23	00100011	043	#
36	24	00100100	044	$
37	25	00100101	045	%
38	26	00100110	046	&
39	27	00100111	047	'
40	28	00101000	050	(
41	29	00101001	051	)
42	2A	00101010	052	*
43	2B	00101011	053	+
44	2C	00101100	054	,
45	2D	00101101	055	-
46	2E	00101110	056	.
47	2F	00101111	057	/
48	30	00110000	060	0
49	31	00110001	061	1
50	32	00110010	062	2
51	33	00110011	063	3
52	34	00110100	064	4
53	35	00110101	065	5
54	36	00110110	066	6
55	37	00110111	067	7
56	38	00111000	070	8
57	39	00111001	071	9
58	3A	00111010	072	:
59	3B	00111011	073	;
60	3C	00111100	074	<
61	3D	00111101	075	=
62	3E	00111110	076	>
63	3F	00111111	077	?
64	40	01000000	100	@
65	41	01000001	101	A
66	42	01000010	102	B
67	43	01000011	103	C
68	44	01000100	104	D
69	45	01000101	105	E
70	46	01000110	106	F
71	47	01000111	107	G
72	48	01001000	110	H
73	49	01001001	111	I
74	4A	01001010	112	J
75	4B	01001011	113	K
76	4C	01001100	114	L
77	4D	01001101	115	M
78	4E	01001110	116	N
79	4F	01001111	117	O
80	50	01010000	120	P
81	51	01010001	121	Q
82	52	01010010	122	R
83	53	01010011	123	S
84	54	01010100	124	T
85	55	01010101	125	U
86	56	01010110	126	V
87	57	01010111	127	W
88	58	01011000	130	X
89	59	01011001	131	Y
90	5A	01011010	132	Z
91	5B	01011011	133	[
92	5C	01011100	134	\
93	5D	01011101	135	]
94	5E	01011110	136	^
95	5F	01011111	137	_
96	60	01100000	140	`
97	61	01100001	141	a
98	62	01100010	142	b
99	63	01100011	143	c
100	64	01100100	144	d
101	65	01100101	145	e
102	66	01100110	146	f
103	67	01100111	147	g
104	68	01101000	150	h
105	69	01101001	151	i
106	6A	01101010	152	j
107	6B	01101011	153	k
108	6C	01101100	154	l
109	6D	01101101	155	m
110	6E	01101110	156	n
111	6F	01101111	157	o
112	70	01110000	160	p
113	71	01110001	161	q
114	72	01110010	162	r
115	73	01110011	163	s
116	74	01110100	164	t
117	75	01110101	165	u
118	76	01110110	166	v
119	77	01110111	167	w
120	78	01111000	170	x
121	79	01111001	171	y
122	7A	01111010	172	z
123	7B	01111011	173	{
124	7C	01111100	174	\|
125	7D	01111101	175	}
126	7E	01111110	176	~
127	7F	01111111	177	—
128	80	10000000	200	—
129	81	10000001	201	—
130	82	10000010	202	—
131	83	10000011	203	—
132	84	10000100	204	—
133	85	10000101	205	—
134	86	10000110	206	—
135	87	10000111	207	—
136	88	10001000	210	—
137	89	10001001	211	—
138	8A	10001010	212	—
139	8B	10001011	213	—
140	8C	10001100	214	—
141	8D	10001101	215	—
142	8E	10001110	216	—
143	8F	10001111	217	—
144	90	10010000	220	—
145	91	10010001	221	—
146	92	10010010	222	—
147	93	10010011	223	—
148	94	10010100	224	—
149	95	10010101	225	—
150	96	10010110	226	—
151	97	10010111	227	—
152	98	10011000	230	—
153	99	10011001	231	—
154	9A	10011010	232	—
155	9B	10011011	233	—
156	9C	10011100	234	—
157	9D	10011101	235	—
158	9E	10011110	236	—
159	9F	10011111	237	—
160	A0	10100000	240	—
161	A1	10100001	241	—
162	A2	10100010	242	—
163	A3	10100011	243	—
164	A4	10100100	244	—
165	A5	10100101	245	—
166	A6	10100110	246	—
167	A7	10100111	247	—
168	A8	10101000	250	—
169	A9	10101001	251	—
170	AA	10101010	252	—
171	AB	10101011	253	—
172	AC	10101100	254	—
173	AD	10101101	255	—
174	AE	10101110	256	—
175	AF	10101111	257	—
176	B0	10110000	260	—
177	B1	10110001	261	—
178	B2	10110010	262	—
179	B3	10110011	263	—
180	B4	10110100	264	—
181	B5	10110101	265	—
182	B6	10110110	266	—
183	B7	10110111	267	—
184	B8	10111000	270	—
185	B9	10111001	271	—
186	BA	10111010	272	—
187	BB	10111011	273	—
188	BC	10111100	274	—
189	BD	10111101	275	—
190	BE	10111110	276	—
191	BF	10111111	277	—
192	C0	11000000	300	—
193	C1	11000001	301	—
194	C2	11000010	302	—
195	C3	11000011	303	—
196	C4	11000100	304	—
197	C5	11000101	305	—
198	C6	11000110	306	—
199	C7	11000111	307	—
200	C8	11001000	310	—
201	C9	11001001	311	—
202	CA	11001010	312	—
203	CB	11001011	313	—
204	CC	11001100	314	—
205	CD	11001101	315	—
206	CE	11001110	316	—
207	CF	11001111	317	—
208	D0	11010000	320	—
209	D1	11010001	321	—
210	D2	11010010	322	—
211	D3	11010011	323	—
212	D4	11010100	324	—
213	D5	11010101	325	—
214	D6	11010110	326	—
215	D7	11010111	327	—
216	D8	11011000	330	—
217	D9	11011001	331	—
218	DA	11011010	332	—
219	DB	11011011	333	—
220	DC	11011100	334	—
221	DD	11011101	335	—
222	DE	11011110	336	—
223	DF	11011111	337	—
224	E0	11100000	340	—
225	E1	11100001	341	—
226	E2	11100010	342	—
227	E3	11100011	343	—
228	E4	11100100	344	—
229	E5	11100101	345	—
230	E6	11100110	346	—
231	E7	11100111	347	—
232	E8	11101000	350	—
233	E9	11101001	351	—
234	EA	11101010	352	—
235	EB	11101011	353	—
236	EC	11101100	354	—
237	ED	11101101	355	—
238	EE	11101110	356	—
239	EF	11101111	357	—
240	F0	11110000	360	—
241	F1	11110001	361	—
242	F2	11110010	362	—
243	F3	11110011	363	—
244	F4	11110100	364	—
245	F5	11110101	365	—
246	F6	11110110	366	—
247	F7	11110111	367	—
248	F8	11111000	370	—
249	F9	11111001	371	—
250	FA	11111010	372	—
251	FB	11111011	373	—
252	FC	11111100	374	—
253	FD	11111101	375	—
254	FE	11111110	376	—
255	FF	11111111	377	—

Common Hex Values in Programming

32-bit signed 2147483647

0x80000000

Decimal 2147483648

32-bit signed -2147483648

0xFFFFFFFF

Decimal 4294967295

32-bit signed -1

How to Read a Hex Conversion Table

Find the hexadecimal value, then read across the row to see the same integer in other bases. Each hex digit represents four binary bits: A–F mean decimal 10–15, and two hex digits cover one 8-bit byte.

Hex to Decimal Example

Hex 1A equals 1 × 16 + 10, or decimal 26. For an instant result and the full positional calculation, use the Hex to Decimal Converter.

Decimal to Hex Example

Decimal 255 divided by 16 produces quotient 15 and remainder 15. Both digits are F, so the result is FF. Try other values with the Decimal to Hex Converter.

What Does the 0x Prefix Mean?

Programming languages use 0x to mark a number as hexadecimal. FF, 0xFF, and FFh can represent the same value; the prefix or suffix is notation rather than part of the number.